Leg
|
Hole
|
Latitude
|
Longitude
|
Ocean
|
Water depth
(m) |
Age (Ma)
|
Sediment thickness
(m) |
Basement penetration (m)
|
Recovery (%)
|
Spreading rate
|
Comments
|
Lithology
|
---|---|---|---|---|---|---|---|---|---|---|---|---|
24 | 238 | 11°09.21´S | 70°31.56´E | Indian | 2845 | 30 | 506 | 81 | 50 | S/I | Projection of Chagos-Laccadive Plateau | Basaltic lavas |
26 | 257 | 30°59.16´S | 108°20.99´E | Indian | 5278 | 120 | 262 | 65 | 50 | S/I | Wharton Basin off Perth, Australia | Basaltic and breccia |
34 | 319A | 13°01.04´S | 101°31.46´W | Pacific | 4296 | 16 | 98 | 59 | 25 | F | Bauer Deep, 13°S East Pacific Rise | Basaltic lavas |
37 | 332A | 36°52.72´N | 33°38.46´W | Atlantic | 1851 | 3.5 | 104 | 331 | 10 | S | Mid-Atlantic Ridge 36-37°N | Basalt, basalt breccia, interlayered sediments |
37 | 332B | 36°52.72´N | 33°38.46´W | Atlantic | 1983 | 3.5 | 149 | 583 | 21 | S | Mid-Atlantic Ridge 36-37°N | Basalt, basalt breccia |
37 | 333A | 36°50.45´N | 33°40.05´W | Atlantic | 1666 | 3.5 | 218 | 311 | 8 | S | Mid-Atlantic Ridge 36-37°N | Basalt, basalt breccia |
37 | 335 | 37°17.74´N | 35°11.92´W | Atlantic | 3188 | 15 | 454 | 108 | 38 | S | Mid-Atlantic Ridge 36-37°N | Basaltic lavas |
45 | 395A | 22°45.35´N | 46°04.90´W | Atlantic | 4485 | 7.3 | 92 | 571 | 18 | S | Mid-Atlantic Ridge 23°N | Basaltic lavas and breccia |
45 | 396 | 22°58.88´N | 43°30.95´W | Atlantic | 4450 | 9 | 126 | 96 | 33 | S | Mid-Atlantic Ridge 23°N | Basaltic lavas |
46 | 396B | 22°59.14´N | 43°30.90´W | Atlantic | 4459 | 13 | 151 | 255 | 23 | S | Mid-Atlantic Ridge 23°N | Basalt and breccia |
49 | 410A | 45°30.53´N | 29°28.56´W | Atlantic | 2987 | 9 | 331 | 49 | 38 | S | Mid-Atlantic Ridge 45°N | Basaltic lavas |
49 | 412A | 36°33.74´N | 33°09.96´W | Atlantic | 2626 | 1.6 | 163 | 131 | 18 | S | Mid-Atlantic Ridge 33°N | Basalt flows and intercalating limestone |
51-53 | 417A | 25°06.63´N | 68°02.48´W | Atlantic | 5478 | 110 | 208 | 209 | 61 | S | Western Atlantic | Basaltic lavas |
51-53 | 417D | 25°06.69´N | 68°02.81´W | Atlantic | 5479 | 110 | 343 | 366 | 70 | S | Western Atlantic | Basaltic lavas |
51-53 | 418A | 25°02.10´N | 68°03.44´W | Atlantic | 5509 | 110 | 324 | 544 | 72 | S | Western Atlantic | Basaltic lavas |
54 | 428A | 09°02.77´N | 105°26.14´W | Pacific | 3359 | 2.3 | 63 | 53 | 39 | F | 9°N East Pacific Rise | Basaltic lavas |
63 | 469 | 32°37.00´N | 120°32.90´W | Pacific | 3803 | 17 | 391 | 63 | 34 | I | Off California coast | Basaltic lavas |
63 | 470A | 28°54.46´N | 117°31.11´W | Pacific | 3555 | 15 | 167 | 49 | 33 | I | Off California coast | Basaltic lavas |
65 | 482B | 22°47.38´N | 107°59.60´W | Pacific | 3015 | 0.5 | 137 | 93 | 54 | I | Off Gulf of California | Massive basalt and interlayered sediment |
65 | 482D | 22°47.31´N | 107°59.51´W | Pacific | 3015 | 0.5 | 138 | 50 | 50 | I | Off Gulf of California | Massive basalt and interlayered sediment |
65 | 483 | 22°53.00´N | 108°44.90´W | Pacific | 3084 | 2 | 110 | 95 | 40 | I | Off Gulf of California | Massive basalt and pillow basalt with interlayered sediments |
65 | 483B | 22°52.99´N | 108°44.84´W | Pacific | 3084 | 2 | 110 | 157 | 47 | I | Off Gulf of California | Massive basalt and pillow basalt with interlayered sediments |
65 | 485A | 22°44.92´N | 107°54.23´W | Pacific | 2997 | 1.2 | 154 | 178 | 51 | I | Off Gulf of California | Massive basalt and interlayered sediments |
68 | 501 | 01°13.63´N | 83°44.06´W | Pacific | 3467 | 6.6 | 264 | 73 | 60 | I | South flank of Costa Rica Rift | Basaltic lavas |
82 | 559 | 35°07.45´N | 40°55.00´W | Atlantic | 3754 | 35 | 238 | 63 | 37 | S | West flank of Mid-Atlantic Ridge 35°N | Basaltic lavas |
82 | 562 | 33°08.49´N | 41°40.76´W | Atlantic | 3172 | 12 | 240 | 90 | 45 | S | West flank of Mid-Atlantic Ridge 33°N | Pillow basalt and massive basalt |
82 | 564 | 33°44.36´N | 43°46.03´W | Atlantic | 3820 | 35 | 284 | 81 | 43 | S | West flank of Mid-Atlantic Ridge 34°N | Pillow basalt and minor massive basalt |
91 | 595B | 23°49.34´S | 165°31.61´W | Pacific | 5620 | 80 | 70 | 54 | 28 | F | Central South Pacific | Vesicular aphyric basalt |
92 | 597C | 18°48.43´S | 129°46.22´W | Pacific | 4147 | 30 | 53 | 91 | 53 | F | West flank South East Pacific Rise 18°S | Massive basalt flows |
106/109 | 648B | 22°55.320´N | 44°56.825´W | Atlantic | 3326 | 0 | 0 | 50 | 12 | S | Mid-Atlantic Ridge 23°N | Pillow basalt |
123 | 765D | 15°58.560'S | 117°34.51'E | Indian | 5714 | 140 | 928 | 267 | 31 | F | Argo Abyssal Plain | Normal-enriched MORB basaltic lavas |
129/185 | 801C* | 18°38.538´N | 156°21.59´E | Pacific | 5674 | 170 | 462 | 414 | 47 | F | Western North Pacific | Pillow basalt, basalt flows, breccias |
136 | 843B | 19°20.54´N | 159°5.68´W | Pacific | 4418 | 95 | 243 | 71 | 37 | F | West of Hawaii | Basaltic lavas |
69/70/83/111/137/140/148 | 504B | 1°13.611´N | 83°43.818´W | Pacific | 3463 | 6.9 | 274.5 | 1836.5 | 20 | I | South flank of Costa Rica Rift | Basalt, stockwork, diabase |
148 | 896A | 1°13.006´N | 83°43.392´W | Pacific | 3448 | 6.9 | 179 | 290 | 27 | I | South flank of Costa Rica Rift | Basaltic lavas |
185 | 1149D | 31°18.79´N | 143°24.03´E | Pacific | 5818 | 133 | 307 | 133 | 17 | F | Western North Pacific | Pillow basalt, basalt flows, breccias |
187 | 1162B | 44°37.9´S | 129°11.3´E | Indian | 5464 | 18 | 333 | 59 | 17 | I | Australian-Antarctic Discordance | Basaltic lavas and breccia |
187 | 1163A | 44°25.5´´S | 126°54.5´E | Indian | 4354 | 17 | 161 | 47 | 33 | I | Australian-Antarctic Discordance | Basaltic lavas |
187 | 1164B | 43°45.0´S | 127°44.8´E | Indian | 4798 | 18.5 | 150 | 66 | 16 | I | Australian-Antarctic Discordance | Basaltic lavas |
191 | 1179D | 41°04.8'N | 159°57.8´E | Pacific | 5564 | 129 | 377 | 98 | 44 | F | Western North Pacific | Basaltic lavas |
200 | 1224F | 27°53.36'N | 141°58.77'W | Pacific | 4967 | 46 | 28 | 147 | 26 | F | Central Pacific | Basaltic lavas |
203 | 1243B | 5°18.07'N | 110°04.58´W | Pacific | 3868 | 11 | 110 | 87 | 25 | F | Western flank of East Pacific Rise 5°N | Basaltic lavas |
206 | 1256C | 6°44.18´N | 91°56.06´W | Pacific | 3635 | 15 | 251 | 89 | 61 | F | Cocos Plate eastern flank East Pacific Rise | Basaltic lavas |
206 | 1256D | 6°44.16´N | 91°56.06´W | Pacific | 3635 | 15 | 251 | 502 | 48 | F | Cocos Plate eastern flank East Pacific Rise | Basaltic lavas |
Notes: S = slow (<40 cm/m.y.), I = intermediate, F = fast (>80 cm/m.y.). The holes listed here sampled normal mid-ocean-ridge basalt (N-MORB) crust formed at bare rock mid-ocean ridges and were initiated in lavas. We have not included holes from arc settings or holes spudded into plutonic rocks at tectonic windows or transform faults. Table adapted from separate compilations of hard rock drill holes by W. Bach, J. Alt, and D. Teagle. * = 60.2 m of alkali basalt sills that were intruded at the sediment/basement boundary some 20 m.y. after the formation of the crust in Hole 801C have been subtracted from the basement penetration in that hole.